TY - CONF A1 - May, Anastasia T1 - Thermomechanochemical Synthesis of Pimelic Acid Cocrystals N2 - Milling temperature is a critical factor in mechanochemistry, affecting the kinetics and outcomes of reactions. In the context of cocrystallization, the influence of milling temperature on the process has been investigated for cocrystal systems pyrazinamide:pimelic acid (PZA:PA) and 4,4'-bipyridine:pimelic acid (BPY:PA). By means of temperature-controlled milling, stabilization of metastable polymorph of PZA:PA was achieved, thereby decelerating the aging process of the polymorph. This was accomplished through controlled heated milling of PZA and PA. Furthermore, we have successfully synthesized all three BPY:PA polymorphs by mechanochemistry involving controlled cooled and heated milling. In previous studies, only the most stable polymorph was obtained by mechanochemistry. T2 - 10th European Crystallography School CY - Ohrid, North Macedonia DA - 23.06.2025 KW - Mechanochemistry KW - Cocrystal PY - 2025 AN - OPUS4-63797 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kabelitz, Anke T1 - Combining fast-XANES and SAXS for time-resolved studies on the formation mechanism of iron oxide nanoparticles T2 - The 29th European Crystallographic Meeting (ECM) 2015 CY - Rovinj, Croatia DA - 2015-08-20 PY - 2015 AN - OPUS4-35245 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Altmann, Korinna T1 - Identification and Quantification of Microplastic in Sewage systems by TED-GC-MS N2 - The number of publications reporting the amount of microplastic (MP) all over the world increased rapidly. Methods used so far are very time consuming and not able to provide information on total contents. As harmonised sampling, sample preparation and analysis strategies are missing different studies can hardly be compared and quantitative data, including identification and mass contents of the polymers found, are missing. This leads to a lack of comprehensive understanding of MP occurrence, source and entry pathways into the environment. We developed a method, Thermal Extraction/Desorption-Gaschromatography-Massspectrometry, as a fast screening method for MP analysis. Solid residues of water samples are heated up to 600 C under a N2 atmosphere without any sample preparation. The collected decomposition gases are separated in a gas chromatography system and detected in a mass spectrometer. Mass contents of the identified polymers can be calculated. In this presentation we will show first results from the influent of the wastewater treatment plant Kaiserslautern (Germany) and its combined sewage system as possibly entry pathway. In order to determine the relevance of wastewater split streams analysis of grey water will be conducted. Samples are fractionally filtered by a sieve cascade with mesh sizes of 500, 100, 50 µm. T2 - CEST2019 CY - Rhodos, Greece DA - 04.09.2019 KW - Microplastic KW - TED-GC-MS KW - Microplastic analysis KW - Grey water KW - Waste water treatment plant PY - 2019 AN - OPUS4-48933 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heilmann, Maria T1 - Synthesis of bimetallic nickel nanoparticles as catalysts for the Sabatier reaction N2 - Nanoparticles (NPs) have become important materials for a variety of chemical technologies. The enhanced surface-area-to-volume ratio of NPs, making them excellent for use as catalyst, in analytical assays, and for antimicrobial applications. Nickel NPs have exhibited immense potential as important catalyst for the Sabatier reaction, i.e. converting waste to energy via transformation of CO2 into CH4, and could replace the rare earth elements such as Ru, PT, or Rh. In this work we describe the solvothermal synthesis of monometallic and bimetallic nickel nanoparticles. Monodisperse monometallic Ni NPs were synthesized using Oleylamin as solvent and reducing agent. The nanoparticles were investigated using small angle scattering (SAXS), scanning transmission electron microscopy (STEM) and energy dispersive X-ray spectroscopy (EDX), showing that the NPs are stable while the surface is not entirely covered. However, Ni has a high propensity to undergo oxidation, and becoming deactivated by coke formation. Hence, we further explore the preparation of bimetallic NPs, where a second metal is added to stabilize the Ni. Bimetallic Cu-Ni NPs were synthesized by simultaneous solvothermal reduction. These bimetallic NPs exhibit excellent catalytic properties are promising candidates to be used as catalysts for efficient energy storage. T2 - Adlershofer Forschungsforum 2019 CY - Berlin, Germany DA - 11.11.2019 KW - Nanoparticles KW - Catalysis KW - Synthesis PY - 2019 AN - OPUS4-50173 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stephan, H. T1 - Chitosan-encapsulated Clusteranions T2 - BioNanoMaT, Bioinspired Nanomaterials for Medicine and Technologies, DECHEMA e. V. CY - Marl (North Rhine-Westphalia), Germany DA - 2005-11-23 PY - 2005 AN - OPUS4-11567 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stephan, H. T1 - Synthesis and structural aspects of pyridine- and imidazole-functionalised bispidines T2 - 37th International Conference of Coordination Chemistry CY - Cape Town, South Africa DA - 2006-08-13 PY - 2006 AN - OPUS4-12170 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppen, Robert T1 - Untersuchung der enantiomerenspezifischen Anreicherung von Hexabromocyclododecan T2 - Evaluierung der BAM (Zweiggelände Adlershof) durch den Wissenschaftsrat CY - Berlin, Germany DA - 2006-01-17 PY - 2006 AN - OPUS4-11763 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eckhardt, B. T1 - A general strategy for the synthesis of micelle-templated mesoporous metal carbonates and metal oxides T2 - MSE - Material Science Engineering CY - Darmstadt, Germany DA - 2014-09-23 PY - 2014 AN - OPUS4-32929 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fischer, Franziska T1 - Direct in situ analysis of milling reactions for mechanistic studies using X-ray diffraction combined with Raman spectroscopy T2 - 4. Berliner Chemie Symposium CY - Berlin DA - 2015-04-09 PY - 2015 AN - OPUS4-33054 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Leng, Jing T1 - Structure-Property relationships of Nanocomposites based on polylactide and layered double hydroxides T2 - 79. Jahrestagung der DPG und DPG-Frühjahrstagung CY - Berlin, Germany DA - 2015-03-15 PY - 2015 AN - OPUS4-32890 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schulz, K. T1 - Impact of thermal and hydrothermal treatment on the cystalinity of mesoporous hematite films T2 - El Gouna Symposium on Electrocatalysis & Materials for Energy Conversion and Storage CY - El Gouna, Egypt DA - 2015-02-01 PY - 2015 AN - OPUS4-32770 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Leng, Jing T1 - Structure-Property relationships of Nanocomposites based on Epoxy and layered double hydroxides T2 - 79. Jahrestagung der DPG und DPG-Frühjahrstagung CY - Berlin, Germany DA - 2015-03-15 PY - 2015 AN - OPUS4-32889 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schulz, K. T1 - Impact of thermal and hydrothermal treatment on the crystallinity of mesoporous hematite films T2 - 27. Deutsche Zeolith-Tagung CY - Oldenburg, Germany DA - 2015-02-25 PY - 2015 AN - OPUS4-32931 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Batzdorf, Lisa T1 - Synthesis and Structural Characterization of Cocrystals T2 - International School of Crystallography, 46th Course: The Future of Dynamic Structural Science CY - Erice, Sicily, Italy DA - 2013-05-31 PY - 2013 AN - OPUS4-32502 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fischer, Franziska T1 - In situ Untersuchungen mechanochemischer Reaktionen mittels Pulverdiffraktometrie T2 - ANAKON 2015 CY - Graz, Österreich DA - 2015-03-23 PY - 2015 AN - OPUS4-32938 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Leiterer, Jork T1 - Characterisation of levitated samples for modelling of condensed matter N2 - Many of today’s analytical problems are characterized by small sample volumes and can only be solved through a corresponding miniaturisation of the analytical instrumentation. Handling of small-sample volumes is inherently difficult due to contamination and sorption processes on the walls of containers. Acoustic levitation is a powerful tool for contact-free sample handling of solid, liquid, and selected gaseous samples. In addition, levitation permits a chemical pre-treatment such as enrichment, extraction, and derivatisation as well as combination with other analytical techniques such as optical spectroscopy. Acoustically levitated liquid and solid samples are typically in a range between 0.005-5 µl (diameter 0.2-2 mm respectively) and are suspended in a gaseous environment by a stationary ultrasonic field. Acoustic levitation avoids sample contamination and sorption processes by container walls, but suffers from evaporation and loss of solvents. Nonetheless, it is of great impact for the characterization of small samples. Exact determination of volume is inherently important to find out the resultant concentration in evaporating droplets. Levitation is a possibility to characterise the starting conditions of crystallisation and polymerisation. Even for spectroscopic methods the correct information on shape, size and concentration of samples are indispensable. To determine the size and volume of levitated samples, different methods of contactless droplet size monitoring were developed and compared in detail. They give the initial values for modelling of evaporation effects. In addition, for balancing evaporation and condensation on levitated drops during the experiments, non-contact techniques of solvent and reagent supply have been tested. Here, the advantages of acoustic levitation are demonstrated for on line analysis of crystallisation in a levitated droplet. The evaporation and formation of crystals is observed via time-resolved X-ray diffraction using synchrotron radiation at BESSY. Wall-free crystallisation in an acoustic levitator gives a tool to prove existing models concerning crystallisation processes. Furthermore the occurrence of polymorphic modifications depending on different conditions can be detected in situ under different and adjustable conditions. T2 - 13. Vortragstagung "Modellierung in der Festkörper- und Materialchemie" der GDCh-Fachgruppe Analytische Chemie, Rheinisch-Westfälische Technische Hochschule Aachen CY - Aachen, Germany DA - 2006-09-20 PY - 2006 AN - OPUS4-13805 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Emmerling, Franziska T1 - Kristallstruktur von Tris(oxamiddioxim-k2N,N')nickel(II) L(+)-Tartrat, [Ni(H2oxado)3][L(+)-(C4H406)] T2 - DGK- Jahrestagung in Bremen 2007 CY - Bremen, Germany DA - 2007-03-05 PY - 2007 AN - OPUS4-14280 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Juran, S. T1 - Bispidines as a new class of chelating agents for copper radionuclides T2 - 17. Internationale Symposium on Radiopharmaceutical Scienses CY - Aachen, Germany DA - 2007-04-30 PY - 2007 AN - OPUS4-14069 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kraus, Werner T1 - Supramolekulare Netzwerke auf der Basis von Kupfer(II)-Bispidinkomplexen T2 - DGK-Jahrestagung 2007 CY - Bremen, Germany DA - 2007-03-05 PY - 2007 AN - OPUS4-14070 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Emmerling, Franziska T1 - Alkalimetalloxoferrate AFeO2 Strukturchemie und Mößbauerspektroskopie T2 - DGK Jahrestagung CY - Berlin, Germany DA - 2007-03-05 PY - 2007 AN - OPUS4-14656 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wenzel, Klaus-Jürgen T1 - Tricalciumphosphat aus Sicht der Röntgendiffraktometrie T2 - 6. Sitzung des AK Biokeramik, BAM CY - Berlin, Germany DA - 2007-04-26 PY - 2007 AN - OPUS4-14706 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -